A headteacher called police after she was allegedly threatened by a gang when a pupil turned up uninvited to the school prom.

West Midlands Police said the student and a group of adults and youths gatecrashed the party, held in Birmingham city centre last Friday

The head was allegedly threatened and later reported the incident to police.

Tweets by WMP

Officers did not attend but she was advised to dial 999 if threatened by the group again.

Police now plan to speak to her about the incident.

The force refused to name the school but said it was based in Chelmsley Wood .

Police tweeted about the prom threat as part of its ‘wmpgoingallout’ day, where its contact centre outlined some of the 999 and 101 calls it dealt with.

They tweeted on Thursday: “09:57 Headteacher reports threats to her at a prom when a pupil wasn’t invited.

"The pupil turned up with adults and youths.

“The headteacher just wanted the matter to be logged but Rachel (call handler) assessed the risk and will send officers to the school to see her.

“As a matter of routine, the caller was advised that if those involved turned up at school again and made threats, call 999.”

Meanwhile, dozens of schoolchildren were left in tears after their special Limo party bus was cancelled 20 minutes before their school prom.

Thirty six pupils from Lyndon Green Junior School in Sheldon were left stranded after a driver from Posh Limos called to say he was stuck in traffic in Liverpool, and wouldn’t be able to make the journey.